.div1{
  width: 0;
  height: 0;
  border-top: 250px solid #f6d365;
  border-left: 250px solid #a4d7e1;
  border-bottom: 250px solid #ed1250;
  border-right: 250px solid #414141;
  margin: 40px auto;
}
.div2{
  width: 0;
  height: 0;
  border-top: 250px solid #f6d365;
  border-left: 250px solid transparent;
  border-bottom: 250px solid transparent;
  border-right: 250px solid transparent;
  margin: 0 auto;
}
.div3{
  width: 0;
  height: 0;
  border: 250px solid transparent;
  border-top-color: #ed1250;
  margin: 0 auto;
}